Acid burn?

[Maggie's teeth]

I had a Cerec crown placed on a tooth 2 days ago. I was given an injection in my gum. The shot began wearing off slightly before they were ready to place the crown. When the dental MA held the blue light down in front of the tooth to bond the crown I felt the instrument against my gum and thought I felt heat. Yesterday there was a white spot about the size of a pea on my gum and it was incredibly painful.
Today I went back to the dentist who claims it's a pretty rare reaction to the novocaine. I was thinking my gum was burned.
Ever heard of either instance?
Thanks in advance!

 

[MattKW]

It's unclear what might have caused your white spot. The curing light causes the glue to set, hence the feeling of warmth, but this is not hot enough to cause damage. A rare reaction to LA? Not sure what he meant by that - LAs are incredibly unlikely to cause any sort of allergic reaction, and would not present in that manner anyway. If you have healed up, then wait and see; if not healing up, go back and ask again.

 

[Maggie's teeth]

Thank you for your reply. I'm going to see my PCP about it.